Thebhora vharafuyakabuda muma1950.Nekukurumidza kukura kwesainzi uye tekinoroji, kuenderera mberi kwekuvandudza tekinoroji yekugadzira uye chimiro chechigadzirwa, mumakore makumi mana chete, yakakurumidza kukura kuita chikamu chikuru chevharuvhu.Munyika dzakabudirira dzekumadokero, kushandiswa kwemavharuvhu ebhora kuri kuwedzera gore negore.
Mavharuvhu ebhora anoshandiswa zvakanyanya mukunatsa peturu, mapaipi akareba, indasitiri yemakemikari, kugadzira mapepa, mishonga, kuchengetedza mvura, simba remagetsi, manejimendi ekanzuru, simbi uye mamwe maindasitiri, uye ane chinzvimbo chakakosha muhupfumi hwenyika.Iine chiito chekutenderera 90 madhigirii, muviri wejongwe ibhora, rine denderedzwa kuburikidza negomba kana gwara rinopfuura nepakati payo.
Ivhavha yebhora inonyanya kushandiswa kucheka, kugovera uye kushandura nzira yekuyerera kwepakati mupombi.Inongoda kutenderera 90 madhigirii uye torque diki inogona kuvharwa zvakasimba.Ivhavhavha yebhora ndiyo inonyanya kukodzera kushandiswa sevhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavhavha yakamira V-shaped.Mukuwedzera pakuteerera kumiganhu yepombi, mavharuvhu emagetsi anofanirwawo kubhadhara zvakanyanya kumamiriro ezvakatipoteredza maanoshandiswa.Sezvo chigadziro chemagetsi muvhavha yemagetsi chiri chigadziro che electromechanical, chimiro chekushandiswa kwayo chinokanganiswa zvikuru nemamiriro ayo ekushandisa.Mumamiriro ezvinhu akajairika, kutarisisa kwakanyanya kunofanirwa kubhadharwa pakushandiswa kwemagetsi ebhora mavharuvhu uye butterfly mavharuvhu munzvimbo dzinotevera.
Basa kupatsanurwa
1. Bypass valve: Ivhavha yebhora inowanzozarurwa nemvura yakadzikama, saka vheji yevhavha inogadzirirwa kutanga kudzvanywa, kureva kuti, mativi ose akazadzwa nemvura;
2. Mhepo yemhepo: kana ichizadza nemvura, buoy ichavhara yega valve kana mhepo yabviswa;kana ichidonhedza, buoy inodzikiswa pachayo kana ichishandiswa pakuzadza mweya;
3. Ivhavha yekudzivirira kudzvinyirira: pakuzarura nekuvhara valve, bvisa mvura inodzvinyirira pakati pevhavha uye chivharo chekuvhara kuti usapfeke chivharo chekuvhara;
4. Sewage valve: dhonza tsvina muchikamu chezasi chebhokoni yebhora.
Transmission classification
1. Pneumatic bhora vharafu
2. Electric ball valve
3. Hydraulic ball valve
4. Pneumatic hydraulic ball valve
5. Electro-hydraulic ball valve
6. Turbine drive bhora vharafu
